Taxi advertising device



Oct. 18,1927. 04

E. DOBROWSKY v TAXI ADVERTISING DEVICE Original Filed July 6, 1925 2'Sheets-Sheet 1 WITNESSES lNVENToR v ATTORNEYS E. DOBROWSKY TAXIADVERTISING DEVICE- Oct. 18, 1927. ,8

Original Filed July 6. 1925 2 Sheets-Sheet 2 llllllllllllll ll llllyllllllllilllflll WITNESSES INVENTOR Emmanuelflobraws ATTORNEYSPatented a. 18, 1921.

UNITED STATES PATENT OFFICE.

EMMANUEL DOBROWSKY, OF NEW YORK, N. Y., ASSIGNOR, BY DIRECT AND MESNEAS- SIGNHENTS, TO MOTOR CAR ADVERTISING DEVICE 00., INC., 0! NEW YOEK,N. Y.,

i A CORPORATION 01 NEW YORK.

TAXI ADVERTISING DEVICE.

Application filed July 8, 1925, Serial Ilo. 41,819. Renewed January 13,1827.

This invention relates to taxi advertising devices and more articularlyto an advertising device especiall adapted to be pos tioned within ataxica ,bus, or other publ c automobile conveyance which is operatedthrou h the medium of the engine.

A urther object is to provide an advertising device which can beconveniently observed or read by the occupant on the seat of the car,and which will be entirely automatic in its operation and the movementof one advertisement, sign or data of any sort A further object is toprovide an apparatus of this character which is operated by suction orpartial vacuum induced by the engine of the taxi orother automobile,which will be neatand attractive in appearance, and which can bemanufactured and sold at a reasonably low price. I

With these and other objects in view, the invention consists in certainnovel features of construction and combinations and arrangements ofparts, which will be more Y fully hereinafter described and pointed outin the claim.

In the accompanying drawings- Figure 1 is a fragmentary view in sideelevation of a taxicab partially broken out, illustrating the positionof my improved advertising device; I

Figure 2 is a view in longitudinal section with my improved deviceremoved from the taxicab, this view being taken on the line 2-2 ofFigure 3;

36 Figure 3 is a view in elevation, looking at the left-hand end ofFigure 2;

Figure 4 is a view, illustrating the power driven roll and its adjacentmechanism, the casing being in'section; 1

4 Figure 5 is a view in section on the line 55 of Figure 4. I

Figure 6 is a fragmentary view in longitudinal section illustrating thevalves 28 and in their mounting.

1 represents a taxicab and it is distinctly understood that my inventionis particularly adapted for use in combination with a taxi and I desireto cover the combination broadly of my improved apparatus or de-- upperfront portion of the body of the taxicab in any a proved manner.

In this casing 2 I provide a series of rolls 3 and 4. I have shown threerolls 3 in the upper portion of the casing and a single roll 1 1n thelower portion of the casing although it is obvious that any desirednumber and arrangement of rolls may be provided. On these rolls 3'and 4and over a smaller idle roll 5, a pair of endless tapes 6 is mounted,and on these tapes, sheets or aprons 7 may be secured containinadvertising or other matter to be displaye It is of course to beunderstood that the sheets or aprons 7 may be removable and replaced asoccasion may require, and Ido not wish to be limited to the particularmounting of the advertising or display matter.

In the wall of the casin 2 I provide a transparent window 8 whicii is inline with the vision of the passen r on the seat of the taxi so that theadvertlsing or display features may be readily observable through. thiswindow.

To illuminate the same, especially at ni ht I-provide an electric lamp 9located .wit in a reflector 10 which throws the light through the windowonto the advertising or display matter.

The driving roll 4 as well as all of the other rolls are preferablymounted so as to reduce friction to a minimum, and I have illustrated inFigure 4 this roll as having pointed trunnions 11 to turn in thrust bearin s 12. I also provide small, preferably ru her-covered, pressurerollers 13 mounted in pivoted arms 14, the latter engaged by sprlngs 15to hold the rollers 13against the tapes 6, or advertising matter on thetapes,

so as to prevent slippm of the endless advertising matter, as wi bereadily understood. as

A ratchetwheel 16 is fixed to turn with the drive roll 4, and aspring-pressed pawl 17 enga es this ratchet wheel to revent ret-rogra emovement thereof. orward movement is imparted to the ratchet wheel 16 bya spring-pressed pawl 17 'carriediby a frame 18. s This frame 18 is ofgeneral oblong shape with its ends projecting into cylinders-19 and 20and fixed to the pistons 21 and 22 in the respective cylinders, sothatthe 106 pistons and the cylinders constitute a rigid 26 and 27 areconnected by a stem 28 which is longer than the passage 24 so that onlyone a of the valves 26 or 27 can seated at a time,

cylinders not enoug the other being open.

The passage 24 communicates centrally with a plassage 29 which lattercommunicates wit the bore of a nipple 30, the latter being connected bya coil lin 31 with a tube 32 which may be flexi le if desired.

As s own most clearl in Figure 6, the head 23 between the cylinders 19and 20' is provided with a passage 33 communicating with both cylinders1 9 and 20 and havin valve seats 34 at its respective ends adapted to beengaged by a valve 35 shorter than the passage. ThlS passage 33communicates with the atmosphere through the medium of a port 36 and haspins or pro'ections 37 at its ends which pro'ect into t e res tive to beengaged y the respectlve plungers. When one'plston moves to its extremeinward position it will shift this valve to the other extreme positionof the valve, and this valve as well as the valves 26 and 27 will beheld by the suction or partial vacuum created within the cylinders untilsaid valves are forcibly shifted from one position to another byengagement with the plungers. By reason of this valve 36 air is admittedto the respective cylinders as the plungcrs move outwardly.

It is to be understood that this tube 32 is adapted to be connected withthe exhaust or other portion of the taxi engine which induces a suctionor artial vacuum as the apparatus is o ra by suction or partial vacuum,as now be explained.

acme 4 With the parts as shown in Figure 5, the suction in cylinder 19is drawing the piston 21 downwardly, imparting7a corresponding movementtothe awl 1 which contacts with the teeth on t e ratchet wheel 16 andimparts rotation thereto. This downward movement of the piston 21 willcont nue until the piston strikes the valve 26 and forces it downwardlto closed posltlon. This will open the va ve 27 and the suction willthen be in the cylinder 20 between the iston 22 and the head 23 so as tomove the rame 18 in the opposite direction. When frame 18 moves in theopposite direction the pawl 17 rides over the teeth of the ratchet'wheel 16 without imparting any movement thereto. I

It is tobe understood that in the claim which follows hereinafter Ishall refer to the tapes and their sheets or aprons..as an .endlessadvertising container, using this term in its broadest possible sense toinclude any movable advertlsing member that may be moved by motion imarted to the roll 4.

I would also have-it istinctly understood that I desire to cover broadlythe idea of a display or advertising device of this character, incombination with a taxicab or analogous vehicle, and I do not wish to belimited to the specific details set forth but consider myself at libertyto make such slight changes and alterations as fairly fall within thespirit and scope of the appended claim.

I claim: a An advertising device adapted to be located in the body of aclosed motor vehicle, and comprising a casing having a window therein, areflector adjacent the window, an-

electric light in the reflector, an endless display device in thecasing, a roller transmitting motion tothe endless device, and a suctionvoperated engine controlling the mo've ment of said roller and endlessdevice.

EMMANUEL DOBROWSKY.

